WO2001055578A3 - Injection nozzle - Google Patents

Injection nozzle Download PDF

Info

Publication number
WO2001055578A3
WO2001055578A3 PCT/DE2001/000280 DE0100280W WO0155578A3 WO 2001055578 A3 WO2001055578 A3 WO 2001055578A3 DE 0100280 W DE0100280 W DE 0100280W WO 0155578 A3 WO0155578 A3 WO 0155578A3
Authority
WO
WIPO (PCT)
Prior art keywords
injection nozzle
valve seat
wall part
fluid exit
piezo
Prior art date
Application number
PCT/DE2001/000280
Other languages
German (de)
French (fr)
Other versions
WO2001055578A2 (en
Inventor
Friedrich Boecking
Original Assignee
Bosch Gmbh Robert
Friedrich Boecking
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Bosch Gmbh Robert, Friedrich Boecking filed Critical Bosch Gmbh Robert
Priority to HU0202473A priority Critical patent/HUP0202473A2/en
Priority to KR1020017012307A priority patent/KR20010111284A/en
Priority to JP2001555684A priority patent/JP2003521616A/en
Priority to EP01914997A priority patent/EP1222382A2/en
Publication of WO2001055578A2 publication Critical patent/WO2001055578A2/en
Publication of WO2001055578A3 publication Critical patent/WO2001055578A3/en

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M61/00—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00
    • F02M61/16—Details not provided for in, or of interest apart from, the apparatus of groups F02M61/02 - F02M61/14
    • F02M61/18—Injection nozzles, e.g. having valve seats; Details of valve member seated ends, not otherwise provided for
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M63/00—Other fuel-injection apparatus having pertinent characteristics not provided for in groups F02M39/00 - F02M57/00 or F02M67/00; Details, component parts, or accessories of fuel-injection apparatus, not provided for in, or of interest apart from, the apparatus of groups F02M39/00 - F02M61/00 or F02M67/00; Combination of fuel pump with other devices, e.g. lubricating oil pump
    • F02M63/0012—Valves
    • F02M63/0031—Valves characterized by the type of valves, e.g. special valve member details, valve seat details, valve housing details
    • F02M63/0033—Lift valves, i.e. having a valve member that moves perpendicularly to the plane of the valve seat
    • F02M63/0036—Lift valves, i.e. having a valve member that moves perpendicularly to the plane of the valve seat with spherical or partly spherical shaped valve member ends
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M47/00—Fuel-injection apparatus operated cyclically with fuel-injection valves actuated by fluid pressure
    • F02M47/02—Fuel-injection apparatus operated cyclically with fuel-injection valves actuated by fluid pressure of accumulator-injector type, i.e. having fuel pressure of accumulator tending to open, and fuel pressure in other chamber tending to close, injection valves and having means for periodically releasing that closing pressure
    • F02M47/027—Electrically actuated valves draining the chamber to release the closing pressure
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M61/00—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00
    • F02M61/16—Details not provided for in, or of interest apart from, the apparatus of groups F02M61/02 - F02M61/14
    • F02M61/167—Means for compensating clearance or thermal expansion
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M63/00—Other fuel-injection apparatus having pertinent characteristics not provided for in groups F02M39/00 - F02M57/00 or F02M67/00; Details, component parts, or accessories of fuel-injection apparatus, not provided for in, or of interest apart from, the apparatus of groups F02M39/00 - F02M61/00 or F02M67/00; Combination of fuel pump with other devices, e.g. lubricating oil pump
    • F02M63/0012—Valves
    • F02M63/0014—Valves characterised by the valve actuating means
    • F02M63/0015—Valves characterised by the valve actuating means electrical, e.g. using solenoid
    • F02M63/0026—Valves characterised by the valve actuating means electrical, e.g. using solenoid using piezoelectric or magnetostrictive actuators

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Fuel-Injection Apparatus (AREA)
  • Nozzles (AREA)

Abstract

The invention relates to an injection nozzle (10) for a fuel injection system. The injection nozzle comprises a pressure space (26), which is provided with a fluid entry (24) and a fluid exit (30), and comprises a valve seat (32) around the fluid exit. The injection nozzle additionally comprises a valve element (34) which can rest on the valve seat in order to close the fluid exit, and comprises a piezo-actuator (40), which is provided with an actuating extension (42) that can act upon the valve element. The aim of the invention is to achieve a temperature compensation using little effort. To this end, a displaceable wall part (28) is provided on which the valve seat is configured and which borders the pressure space on the side of the valve seat. In addition, a temperature equalizing element (44) is provided which interacts with the displaceable wall part and which displaces the wall part according to a temperature-related change in length of the piezo-actuator.
PCT/DE2001/000280 2000-01-28 2001-01-25 Injection nozzle WO2001055578A2 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
HU0202473A HUP0202473A2 (en) 2000-01-28 2001-01-25 Injection nozzle
KR1020017012307A KR20010111284A (en) 2000-01-28 2001-01-25 Injection nozzle
JP2001555684A JP2003521616A (en) 2000-01-28 2001-01-25 Injection nozzle
EP01914997A EP1222382A2 (en) 2000-01-28 2001-01-25 Injection nozzle

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10003863.8 2000-01-28
DE10003863A DE10003863B4 (en) 2000-01-28 2000-01-28 injection

Publications (2)

Publication Number Publication Date
WO2001055578A2 WO2001055578A2 (en) 2001-08-02
WO2001055578A3 true WO2001055578A3 (en) 2002-02-14

Family

ID=7629141

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE2001/000280 WO2001055578A2 (en) 2000-01-28 2001-01-25 Injection nozzle

Country Status (8)

Country Link
US (1) US20020153429A1 (en)
EP (1) EP1222382A2 (en)
JP (1) JP2003521616A (en)
KR (1) KR20010111284A (en)
CZ (1) CZ20013441A3 (en)
DE (1) DE10003863B4 (en)
HU (1) HUP0202473A2 (en)
WO (1) WO2001055578A2 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7243902B2 (en) 2002-11-08 2007-07-17 Robert Bosch Gmbh Pressure-compensated, directly controlled valve
EP1493917B1 (en) * 2003-05-30 2006-04-12 Siemens VDO Automotive S.p.A. Injector assembly
DE10328573A1 (en) * 2003-06-25 2005-01-13 Robert Bosch Gmbh Fuel injector
EP1694957A1 (en) * 2003-11-11 2006-08-30 Robert Bosch GmbH Pressure-compensated, directly controlled valve
EP1719904A1 (en) * 2005-05-02 2006-11-08 Robert Bosch Gmbh Fuel injector

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2087660A (en) * 1980-10-01 1982-05-26 Daimler Benz Ag Electrically activated control elements
US5740969A (en) * 1995-10-18 1998-04-21 Mercedes-Benz Ag Piezo-control valve for fuel injection systems of internal combustion engines
EP0869278A1 (en) * 1997-04-04 1998-10-07 Siemens Aktiengesellschaft Piezoelectric injection valve with means to compensate for the thermal expansion of piezoelectric actuator
DE19727992A1 (en) * 1997-07-01 1999-01-07 Siemens Ag Thermal expansion compensation element
DE19909106A1 (en) * 1999-03-02 2000-09-07 Siemens Ag Temperature compensated actuator unit with piezo element

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3533085A1 (en) * 1985-09-17 1987-03-26 Bosch Gmbh Robert METERING VALVE FOR DOSING LIQUIDS OR GASES
DE19531652A1 (en) * 1995-08-29 1997-05-07 Bosch Gmbh Robert Fuel injection valve for internal combustion engines
DE19540155C2 (en) * 1995-10-27 2000-07-13 Daimler Chrysler Ag Servo valve for an injection nozzle
DE59808465D1 (en) * 1997-12-23 2003-06-26 Siemens Ag INJECTION VALVE WITH CONTROL VALVE
DE19849203A1 (en) * 1998-10-26 2000-04-27 Bosch Gmbh Robert Fuel injection valve for I.C engines with expansion compensated piezoelectric actuators
US6471142B1 (en) * 1999-04-01 2002-10-29 Delphi Technologies, Inc. Fuel injector
DE19946840A1 (en) * 1999-09-30 2001-05-03 Bosch Gmbh Robert Valve for controlling liquids
DE19946841A1 (en) * 1999-09-30 2001-05-03 Bosch Gmbh Robert Valve for controlling liquids
DE19946833C2 (en) * 1999-09-30 2002-02-21 Bosch Gmbh Robert Valve for controlling liquids
DE19946831C1 (en) * 1999-09-30 2001-07-12 Bosch Gmbh Robert Valve for controlling liquids
DE19946830A1 (en) * 1999-09-30 2001-05-03 Bosch Gmbh Robert Valve for controlling liquids
US6499471B2 (en) * 2001-06-01 2002-12-31 Siemens Automotive Corporation Hydraulic compensator for a piezoelectrical fuel injector

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2087660A (en) * 1980-10-01 1982-05-26 Daimler Benz Ag Electrically activated control elements
US5740969A (en) * 1995-10-18 1998-04-21 Mercedes-Benz Ag Piezo-control valve for fuel injection systems of internal combustion engines
EP0869278A1 (en) * 1997-04-04 1998-10-07 Siemens Aktiengesellschaft Piezoelectric injection valve with means to compensate for the thermal expansion of piezoelectric actuator
DE19727992A1 (en) * 1997-07-01 1999-01-07 Siemens Ag Thermal expansion compensation element
DE19909106A1 (en) * 1999-03-02 2000-09-07 Siemens Ag Temperature compensated actuator unit with piezo element

Also Published As

Publication number Publication date
EP1222382A2 (en) 2002-07-17
CZ20013441A3 (en) 2003-02-12
DE10003863A1 (en) 2001-08-16
HUP0202473A2 (en) 2002-12-28
WO2001055578A2 (en) 2001-08-02
DE10003863B4 (en) 2004-11-18
JP2003521616A (en) 2003-07-15
KR20010111284A (en) 2001-12-17
US20020153429A1 (en) 2002-10-24

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